This is a qualitative investigation with a phenomenological approach, which aimed to reveal the inter-subjective processes in the context of the family in which there is a person who suffers from Cystic Fibrosis (CF). Fourteen families of CF carriers were interviewed. They were registered at the Paranaense Association of Cystic Fibrosis Care, and lived in the north and northwest regions of Paraná estate (PR), Brazil. Significant units were taken from their speech and grouped into three categories: Family, Carrier of CF and the other; Religious aspects about the life of the CF carrier in the family; Carrier of CF in the scholar, professional and affective life. The results confirmed that families' experience shared with the other was crucial to face the disease. Knowing the inter-subjective processes that underlie the core of the family of people affected by CF provides a new way of working in nursing.